摘要
采用强酸性苯乙烯系阳离子交换树脂和大孔苯乙烯系螯合树脂相结合的方法制取高纯度的黄腐酸,探讨了离子类型、交换时间和树脂用量对FA纯度的影响,分析了离子交换机理。结论:粗FA溶液依次通过1个001×7 Na^+型、2个D751 Na^+型、1个001×7 H^+型树脂柱,其中001×7型流速1.5 m L/min左右,D751型流速1.5 m L/min左右,FA纯度达99%以上。
Pure fulvic acid was prepared by strong acidic styrene type cation exchange resin and macroporous styrene type chelating resin. Effect of resin type, ion exchange time and resin quantity on FA purity was investigated. The ion exchange mechanism was analyzed. The results show that, the purity of fulvic acid prepared by one 001×7 Na^＋ type column, two D751 Na^＋ type columns and one 001×7 H^＋ type resin column can reach to 99%.
出处
《当代化工》
CAS
2016年第5期893-896,共4页
Contemporary Chemical Industry
关键词
黄腐酸
离子交换
大孔树脂
螯合树脂
fulvic acid
ion exchange
macroporous resin
chelating resin
